A slow server does not hide its bottleneck: the Linux kernel accounts for every nanosecond of CPU time, every major page fault, every block-layer request and every dropped packet. The…
Read MoreSwapfile vs zram on a VPS: Setup, Monitoring, and Swappiness
Swap is the emergency reservoir Linux uses when physical RAM runs out — and on a VPS it is either a lifesaver or the thing that makes your server feel…
Read MoreNginx FastCGI Cache and Microcaching on a VPS: Configs for Dynamic Sites
Every PHP request on a typical WordPress or Laravel VPS spends 100–300 ms in PHP-FPM even when the rendered page barely changes. Nginx’s fastcgi_cache stores the finished HTML and serves…
Read Moresystemd Service Hardening: Sandboxing, Capabilities, and Resource Limits
A freshly installed service on Ubuntu 24.04 typically scores 8–9 on systemd-analyze security — marked EXPOSED — because the default unit grants full filesystem, network, and capability access. The same…
Read MoreZero-Downtime Deploys on a Single VPS: systemd, Blue-Green, and Rollback
A plain systemctl restart app drops every in-flight request, closes established connections, and leaves a visible gap in your error log. On a single VPS you cannot spin up a…
Read MoreSetting Up a Mail Server on a VPS: Postfix and Dovecot with SPF, DKIM, and DMARC
Sending mail from a VPS without authentication setup is a one-way ticket to the spam folder: receiving servers check your IP’s reverse DNS, your SPF record, and your DKIM signature…
Read MoreDocker Resource Limits and cgroup Tuning on a VPS: Keep One Container from Starving the Host
Containers on a VPS share the host kernel — and the host’s CPU, memory, and I/O. The classic failure mode: a single container with a memory leak or a runaway…
Read MoreLogrotate and Disk Space Management on a VPS: Keep Logs Useful Without Filling the Disk
A full disk is one of the most common causes of VPS outages — and it is almost always self-inflicted. Application logs, database binlogs, and package manager caches grow silently…
Read MoreApache Performance Tuning on a VPS: MPM, KeepAlive, and Caching Configs That Matter
Apache only becomes the bottleneck when it runs default configs. Switch to the event MPM, pair it with PHP-FPM, size workers to RAM, and add compression and caching — with benchmarks.
Read MoreCutting Web Latency on a VPS: TTFB, TLS 1.3, and HTTP/2 Tuning
Slow TTFB drives visitors away before they see your page. Measure it with curl, then apply TLS 1.3, OCSP stapling, session caching, HTTP/2, and keepalive tuning to shave 200–400 ms.
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